CalculateMath

Standard Deviation Calculator Calculate the standard deviation of any data set with step-by-step explanation. Find both population and sample standard deviation, learn the formulas, and understand variance and spread in statistics.

Median Calculator Find the median of any data set with step-by-step explanation. Learn how to calculate the median for both odd and even-sized data sets, and understand why the median is often better than the mean for skewed data. Table of Contents 1 What Is the Median? 2 How to Find the Median 3 Step-by-Step Examples 4 More Examples 5 Mean vs. Median — When to Use Which 6 Median and Skewed Data 7 Median, Quartiles, and the Five-Number Summary 8 Common Mistakes to Avoid 9 Real-World Applications 10 Practice Problems with Solutions 11 Tips for Mastering the Median 12 Final Thoughts

Weighted Average Calculator Calculate weighted averages with step-by-step explanation. Enter values and their weights to find the weighted mean for grades, investments, statistics, and data analysis.